Inferred time of flight ranging
AssigneeQUALCOMM Incorporated
InventorsJames Chester Meador, David William Burns
Life of this patent
Estimating the term…
Abstract
Apparatus and method to determine a distance to a second apparatus that is movable. The apparatus and method may detect a range request transmitted between a third apparatus and the second apparatus, wherein the third apparatus is geographically fixed, detect a range response transmitted between the second apparatus and the third apparatus in response to the range request, and determine the distance to the second apparatus based on the detected range request and range response at the apparatus.
Claims59
An apparatus for distance determination, comprising:
- a processing system configured to:
- detect at the apparatus a range request transmitted between a second apparatus and a third apparatus, wherein the third apparatus is geographically fixed, and wherein the second apparatus is movable;
- detect at the apparatus a range response transmitted between the second apparatus and the third apparatus in response to the range request;
- and
- determine a distance between the apparatus and the second apparatus based on the detected range request and the detected range response.
A method for distance determination, comprising:
- detecting at an apparatus a range request transmitted between a second apparatus and a third apparatus, wherein the third apparatus is geographically fixed, and wherein the second apparatus is movable;
- detecting at the apparatus a range response transmitted between the second apparatus and the third apparatus in response to the range request;
- and
- determining a distance between the apparatus and the second apparatus based on the detected range request and the detected range response.
An apparatus for distance determination, comprising:
- means for detecting at an apparatus a range request transmitted between a second apparatus and a third apparatus, wherein the third apparatus is geographically fixed, and wherein the second apparatus is movable;
- means for detecting at the apparatus a range response transmitted between the second apparatus and the third apparatus in response to the range request;
- and
- means for determining a distance between the apparatus and the second apparatus based on the detected range request and the detected range response.
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A computer-program product for distance determination, comprising:
- computer-readable medium comprising code executable to:
- detect at an apparatus a range request transmitted between a second apparatus and a third apparatus, wherein the third apparatus is geographically fixed, and wherein the second apparatus is movable;
- detect at the apparatus a range response transmitted between the second apparatus and the third apparatus in response to the range request;
- and
- determine a distance between the apparatus and the second apparatus based on the detected range request and the detected range response.
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A wireless access point, comprising:
- a processing system configured to:
- provide access to a network for a second apparatus that is movable;
- detect a range request transmitted between a third apparatus and the second apparatus, wherein the third apparatus is geographically fixed;
- detect a range response transmitted between the second apparatus and the third apparatus in response to the range request;
- and
- determine the distance to the second apparatus based on the detected range request and range response at the wireless access point.
A wireless controller, comprising:
- a processing system configured to:
- control equipment in a building automation system;
- detect a range request transmitted between a second apparatus and a third apparatus, wherein the second apparatus is moveable and the third apparatus is geographically fixed;
- detect a range response transmitted between the second apparatus and the third apparatus in response to the range request;
- and
- determine the distance to the second apparatus based on the detected range request and range response at the wireless controller.
Dependencies are inferred from the claim text.